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v2.4.1.9

Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |  |
Net loss | $ (4,413,722)us-gaap_NetIncomeLoss | $ (6,040,611)us-gaap_NetIncomeLoss | $ (3,169,560)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 31,824 us-gaap_DepreciationDepletionAndAmortization | 45,212 us-gaap_DepreciationDepletionAndAmortization | 34,963 us-gaap_DepreciationDepletionAndAmortization
Stock based compensation | 1,042,917 us-gaap_ShareBasedCompensation | 2,914,904 us-gaap_ShareBasedCompensation | 984,537 us-gaap_ShareBasedCompensation
Bad debts | 131,250 us-gaap_ProvisionForDoubtfulAccounts | 81,198 us-gaap_ProvisionForDoubtfulAccounts |
Change in assets and liabilities: |  |  |
Royalty receivables | (439,306)us-gaap_IncreaseDecreaseInAccountsReceivable | (260,042)us-gaap_IncreaseDecreaseInAccountsReceivable | (354,268)us-gaap_IncreaseDecreaseInAccountsReceivable
Prepaid expenses and other current assets | 2,866 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 94,544 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (107,218)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Accounts payable and accrued expenses | 345,356 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (80,064)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (67,547)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Deferred revenue | (25,000)us-gaap_IncreaseDecreaseInDeferredRevenue |  |
Net cash used in operating activities | (3,323,815)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (3,244,859)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (2,679,093)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities: |  |  |
Purchases of fixed assets | (627,660)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (50,536)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (11,576)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Purchase of investments | (3,005,079)us-gaap_PaymentsToAcquireShortTermInvestments | (24,009)us-gaap_PaymentsToAcquireShortTermInvestments | (3,797,865)us-gaap_PaymentsToAcquireShortTermInvestments
Proceeds from sale of investments | 5,076,930 us-gaap_ProceedsFromSaleOfShortTermInvestments |  |
Note and interest receivable on SPD Control Systems |  |  | 224,903 us-gaap_RepaymentOfNotesReceivableFromRelatedParties
Net cash provided by (used in) investing activities | 1,444,191 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (74,545)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (3,584,538)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities: |  |  |
Net proceeds from issuances of common stock and exercise of options and warrants | 3,583,038 us-gaap_ProceedsFromIssuanceOrSaleOfEquity | 795,294 us-gaap_ProceedsFromIssuanceOrSaleOfEquity | 12,250,500 us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Net cash provided by financing activities | 3,583,038 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 795,294 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 12,250,500 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net increase (decrease) in cash and cash equivalents | 1,703,414 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (2,524,110)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 5,986,869 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year | 5,866,123 us-gaap_CashAndCashEquivalentsAtCarryingValue | 8,390,233 us-gaap_CashAndCashEquivalentsAtCarryingValue | 2,403,364 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year | $ 7,569,537 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 5,866,123 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 8,390,233 us-gaap_CashAndCashEquivalentsAtCarryingValue

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